Oil-pump.



No. 825,547. PATBNT ED JULY 10 1906. H. L. LBELIGE &: J. P. BURGER.

BIL HHYH. APPLEGATIGE mm 30 1.15. 1905.

s m .T N. E v m UNITED STATES PAIENT OFFICE.

HENRY L. LEILIGH AND JOHN P. BURGER, OF DELPHOS, OHIO, ASSIGNORS TO THEDELPHOS (JAN COMPANY, OF DELPHOS, OHIO, A CORPORA- TION OF OHIO.

OIL-PUMP.

Specification of Letters Patent.

Application fileliovornbor 15, 1906. fieriel No. 287,480.

To all whom it may concern.-

Be it known that We, HENRY L. LErLIoH and JOHN P. BURGER, citizens ofthe United States, and residents of Del hos, in the county of Allen andState of (lliio, have invented certain new and useful Improvements inOil-Pumps; and we do hereby declare the following to be a full, clear,and exact de scription of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the figures ofreference marked thereon, which form a part of this specification.

Our invention relates to improvements in the class of pumps employed fortransferring liquids from one vessel to another and embod g means bywhich the surplus liquid disc argedito the receiving vessel is returnedto the storage tank or vessel through the con tinued o eration of thepump, whereby to efiectual y prevent an overflow of the liquid in thereceiving vessel. While pum s of this class which employ a sin lepistonlead for effecting the discharge an siphoning heck of a liquid areperfectly satisfactory in their o eration and effectually revent anoverflow of the receiving vessel w on oils or liquids of a light natureare operated on, it has been found in practice that they are ineliectualto prevent an overflow of the liquid from a re oeiving vessel when usedin conjunction with oils or other liquids of a heavy nature.

The primary obj ect of our invention is the provision of a pum for usein conjunction with the handling of oils or other liquids of'a heavynature that is so constructed as to cause a greater suction orsiphoningforce through the returnipe than the ex oiling force throughthe ischargeipe, w ereby the heavy liquid when it rose es apredetermined height in the receiving vessel Willbe returned to thedischarging vessel as fast or faster than it is expelled therefrom.

To this end the invention consists of certain novel features ofconstruction, combinetion and arrangement of the arts, as will behereinafter more fully descri ed and finally clalimei. d f

n t e ecoom anying rawings, ormin part of the spec cation, Figure l is9. side ele vation of a pump embed g one construction of our inventionwit a ortion thereof shown in central longitudina section. Fig.

2 is a side elevation of the pump in another position to that shown inFig. 1, and Fi 3 is an enlarged view of the combined disc arge andreturn spout with a portion shown invertical section,

Referring to the drawings, 1 represents the pump cylinder or barrel,which is provided at its lower end with the usual foot-valve 2 andcommunicates adjacent such end with the discharge-tube 3. Thisdischarge-pi e extends upward at the side of the cylin or and terminatesat its upper end in a spout 3 and is provided adjacent its lower endwith an outwardly-opening check-valve 4.

Substantially midway of the ends of the cylinder 1 is provided a chamber5, which has one side cut away, as shown at 5, and is formed by securelyplacing the spaced artitions 5 5 within the cylinder. This s anihendivides the pump-cylinder into an upper compartment 1 and a lowercompartment 1 7 5 and has communication with each through u per portionof the cylinder, as shown. A.

e amber 7,having ohe side cut away, as at 7, is formed at the upper endof the cylinder 1 by the securing of a partition 7 b therein and hascommunication with the com artment 1 of the cylinder through a contraopening in said partition. Communicating with the compartment 1* off thecylinder adjacent its upper end is the return or siphon tube 8 of thepump, whiohtube for a portion of its length extends upward inparallelism with 5 the dischargetube 3 and terminates at its upper endin the spout 8 and is provided near its inner end with an inwardl -oening check-valve 9, preferably of the hal t e.

The spouts 3" and 8 preferably merge at t eir 10o ends in a commonnozzle 10, but are so arated throughout the length of the nozzle y apartition '10, as shown in Fig. 3. A conduit or channel 11 is providedat one side of the pump-cylinder and has its upper end communicatingwith the compartment -1 through an o' suing 11", adjacent its top, and

.itslower on communicating with the cone for engaging an opening 80partment 1 through an 0 ening 11 adjacent its top. This channe is shownin the drawin s as bein formed bysecuring a lon itudinally-bentsleet-metal strip 12 to tire cylinder-casing.

A piston-r0 13 is mounted within the cylinder 1 and is of sufficientlength to extend from without the top to substantially the bottom of thecylinder and has its upper or outer end terminatin with a handle portion13. This piston-r0 passes freely through the o enings in the partitionsforming the chambers 5 and 7, said openings being of greater diameterthan the rod, and carries a piston-head 14 for operation in thecompartment 1 and a piston-head 15 for operation in the com artment 1The piston-rod is also provide with valves 16 and 17, which are fittedfriction-tight to said rod and arranged to play therewith between theends of the chambers 5 and 7, respectively. These valves are formed of astiff disk of leather, rubber, or other suitable material and areadapted on the downstroke of the piston'rod. to close the lower port oropening in their respective chambers and on the upstroke of said rod toopen said ports or openings and close the opening in the upper end ofthe chamber 5 and pack the opening in the cappiece 6, through which therod passes, against eakage. Each chamber 5 7 and inclosed valve combinesthe functions of both a stuffing-box for preventing leakage around thepiston-rod at such point and a valve for controlling communicationbetween the related compartments and the exterior of the cylinderthrough the opening in the side of the chamber as the rod isreciprocated. An 0 ening 18 is provided in the lower end of t e uppercompartment of the cylinder to prevent the forming of a vacuum below thepiston 14 on its upstroke.

The operation of the pump is as follows: On a reciprocation of thepiston-rod the lower iston-head 15 thereon operates on its upstro e todraw a quantity of oil or other liquid into the lower compartment 1 ofthe ump-cylinder, and on its downstroke to orce the liquid from thecylinder throu h the discharge-pipe 3 and its spout into t e receivingvessel, into which the end of the spout projects. The piston 15 on itsdownstroke also operates to create a suction in the return-tube 8 and isaugmented in this operation by the action of the piston 14 in thecompartment 1, due to the communication between the upper ends of thecompartments 1 and 1 through the channel 11. As the liquid rises in thereceiving vessel to a height sufficient to immerse the open end of thespout of the return-tube the suction created in the return-tube 8 drawsthe surplus liquid in the vessel through the return-tube and back intothe pump-cylinder above the pistons, the valve 9 in the return-tubeopening for that purpose and the liquid taking the course indicated bythe arrows, which show a portion of the returned liquid as following thepiston 15 and remaining in the lower compartment and a portion thereofas passing upward through the channel 11 and into the upper compartmentof the cylinder above the piston. The liquid thus returned to thepump-cylinder is expelled on the upstroke of the pistons to the can ortank in which the pump is positioned, it being free to pass into thechambers 5 and 7 through the o enings or ports in the lower ends thereofan thence into the can or tank throu h the cut away portions 5 and 7' inthe wa ls of said chambers, due to the upward movement of the valve 16and 17 with the piston-rod.

It will thus be apparent that we have provided a pump of thenon-overflow type, which has a more powerful siphonin than expellingforce, whereby oils or other liquids of a heavy nature may be operatedon and returned from a receiving vessel to the vessel from which dischared as fast or faster than they are expelled t lerefrom and simultaneouswith the expelling operation, and that as many of the si honing-pistonsmay be provided in a single pum as the congealed or thickened condition0 the liquid may require to effectually prevent an overflow thereof whenex elled to a receiving vessel.

Having thus escribed our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. A pump, comprising a cylinder divided into a plurality ofcompartments, a discharge-tube, a return-tube, a piston-rod, and apiston carried within each compartment by the piston-rod, saidcompartments having the portions thereof disposed above their pistons incommunication, substantially as described.

2. A pump, comprising a cylinder having a plurality of compartments, apiston-rod, a piston carried Within each compartment by the rod, adischarge-tube and a return-tube communicating w1th one compartment onopposite sides of its piston, the portion of the compartment with whichthe return-tube connects being in communication with each of the likeportions of the other compartments whereby to augment the suctioncreated in the return-tube by the piston operating in the compartmentwith which it is directly connected.

3. A pump, comprising a cylinder having a plurality of superimposedcompartments, a

ischarge-tube eading from the lower of said compartments, a return-tubehaving com- Inumcation with the like portion of each compartment, aiston-rod mounted within the cylinder, an a piston carried by said rodwithin each compartment, all of said istons' being operative to create asuction t ough the return-tube and the lower one being op-,

erative to create a discharge through the other tube.

4. In a pump, a cylinder having a plurality of communicatingsuperimposed compartments, each compartment having a valved exit, adischarge-tube and a return-tube in communication with the lowercompartment, a piston-rod, and a piston carried by said rod within eachcompartment, the one in the lower compartment being 0 erative to createa dischar e through one tu e and a suction through the other, and theother pistons being operative to augment the suction created in thereturn-tube by the first piston.

5. In a pump, a cylinder having a main compartment and an auxiliarycompartment, each irovided with a valved exit, a discharge-tube leadingfrom the main compartment and having an outwardly-0 ening valve, areturn-tube leading to said compartment and having an inwardly-openingvalve, means opening communication between the two compartments, apiston-rod in the cylinder, a piston carried by the rod within the maincompartment and operative to create an expelling force through thedischarge-tube and a suction through the re turn-tube, and a pistoncarried by the rod in the auxiliary compartment for au menting thesuction created in the return-tn e by the other iston.

6. n a pump, a cylinder having two com- Innnicating compartments and anexit from each com artment, a discharge-tube and a return-tulihcommunicating With one com partment, a piston-rod in the cylinder, apiston carried by the rod within each cylinder,

one piston being operative to create an expolling force through thedischar lug-tube and a suction in the return-tube and the other toaugment the suction in the return-tube, and a valve mounted in eachexit-opening and operatively related to the piston-rod.

7. In a pump, the combination of a cylincler having two communicatincompartments, an exit-chamber communicating with each compartment, and avalved intakeopening in one compartment, an eductiontube leading fromthe compartment having the intake-o )ening, a return-tube communicatingwith 0th compartments, a piston-rod in the cylinder, a piston carried bythe rod in each compartment, and a valve mounted in each exit-chamberand operatively related to the piston-rod.

S. In a pump, the combination of a cylinder having an intake at itslower end and two superimposed compartments communicating at their 11per ends and each provided at its upper en with a valved exit, apiston-rod, a piston carried by the rod within each compartrnent, evalved dischergetube leading rem the lower com artment below the dpistontherein, and a va lved return-tube lea ing to the lower compartmenttherein.

In testimony whereof we have hereunto signed our names to thisspecification in the presence of two subscribing Witnesses.

HENRY L. LEILICH. JOHN P. BURGER.

above the piston Witnesses:

A. S. PERKINS, D. D. CHAMBERS.

